package com.atguigu.gulimall.member.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

/**
 * feign拦截器
 */
@Configuration
public class GuliFeignConfig {
    /**
     * 配置请求头，同步旧请求的cookie到新请求中
     *
     * @return
     */
    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor() {
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate requestTemplate) {
                ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                if (requestAttributes != null) {
                    HttpServletRequest request = requestAttributes.getRequest();
                    if (request != null) {
                        //同步请求头数据：Cookie
                        String cookie = request.getHeader("Cookie");
                        ///同步旧请求的cookie到新请求中
                        requestTemplate.header("Cookie", cookie);
                    }
                }
            }
        };
    }
}
